Real Housewives Of Atlanta star Kim Zolciak filed her response to castmate Kandi Burruss‘ lawsuit against her on Monday, and RadarOnline.com has exclusively obtained a $6,000 check included in the document that Kim claims proves she overpaid Kandi!

The Tardy For The Party singer claims that not only did she pay Kandi a whopping $23,000 in royalties owed to her for the song, but in fact overpaid her – and has the receipt to prove it.

According to a press release from Kim’s camp, there are four people involved in the creation of the song and four people that get paid on it — Kim, her daughter, Kandi and Don Vito.

“To date, Kim has written checks to Kandi and Don Vito in excess of $23,000. In fact, we believe that Kim may have overpaid a portion of their share to date based on the actual record sales,” the release said.